Broom-sewing machine.



lie-806,163. 'PATENTED 1330.5,1905.

' A. E.MILLER.

BROOM SEWING MACHINE.

Arruonton FILED JUNE 11, 1903.

' I SHEETS-SHEET 1 N Emmy-m No. 806,163; PATENTEDDEU. 5, 19o5.

' A. E. MILLER, v I

BROOM SEWING MAGHINE.

APPLICATION IILBD JUNE 11 1903.

'l SHEETS-SHEET 2.

No. 806,163. 7 PATENT-EDDEG.5,1905.v

A. E. MILLER..

BROOM SEWING MAGHINE.

APPLICATION FILED JUNE 11, 1903.

7 SHEETS-SHEET 3.

No.-806,163. PATENTED DEC. 5, 1905. Q

A. E. MILLER.

BROOM SEWING MACHINE. I

' APPLICATION FILED JUNE 1 1, 190a.

' 7 SHEETS-SHEET 4.

mm-mm ii l 7 SHEETS-SHEET 5.

PATENTED DEC. 5, 1905.

A. E. MILLER. BROOM SEWING MACHINE.

nrmouyron FILED JUNE-11, 190s.

. vwhntoz Md haze/v Noi 806,163.

PAT ENTED DEG. 5 1905-- v A. E. MILLER. I BEGUM SEWING MACHINE.

APPLICATION 31mm JUNE 11, 1903.

7 SHEETS-SHEET 6- A. E. MILLER.

BROOM SEWING MACHINE. APPLICATION nun Jun 11, 1903. r 1 7 sums-31mm '7.

' PATBNTED DEG; 5,1905.

UNITED OFFICE.

' ANDREW E. MILLER. OF BALTIMQREJEFMQXJRYLAND, 'ASSIGNQR, BY ME'SNE ASSIGNMENTS, TO HAMILTON,- QAS$ABnOEBALT1MoRn MARYLAND.

the following is a specification.

. snows No. 806,163. Specification o f Application filed June 11,1903." "Serial 110161.097. I

To whom it may concern.

Be it known that I, ANDREW 'E. MILLER, a

at Baltimore, in the State of Maryland, have invented certain, new and useful Improvements in Broom-Sewing Machines, of which My present invention relates to improvements in broomsewing machinery, and especially to machines having automatic" features such as those Ihave heretofore patented.

The machine of the present application is particularly designed for sewing whisk-' brooms, and with this end in view I have constructed the parts lightly and adapted them for rapid movement. The various elements of the machine may, however, beused as well 'in machines forsewing the larger sizesof brooms.

- The invention will be described -i n'connec-. tion with the accompanying drawings, in which v Figure 1 is a plan view of the machine, part of the needle-arms and needle-guides being broken away. Fig. 2 is a left side elevation of the machine. Fig. 3 is a right side elevationQ'Fig. 4; is a front view of the vise in locked position. Fig. 5'isa detail ofthe dropping device for the broom-support. Fig. 6 is a sectional view of the vise about on the line 6 6, Fig. 4, looking to the right. Fig. 7 is apart of Fig. 2 enlarged. Fig. 8. isa view of parts shown in Fig. 7, said parts being shown in the position they assume when the machine is sewing. Fig. 9 is a section on the line 9 9 of Fig. 6, and Fig. 10 is a detail of the vising-lever. Fig. 11 isa detail View of part of the vise-feeding mechanism. Fig. 12 is a sectional-view-through the vise on the line 12 12'of Fig. 6.

The various operating parts of the machine are mounted u ponsuitable framework. These parts comprise generally a driving-shaft carrying cams, a vise for holding the broom, sewing mechanism, means for feeding the vise step by step tothe sewing mechanism, means for automatically starting the sewing mechanism, means for automatically-stopping the sewing mechanism, and means for dropping the broom-support to bring the broom into position to sew the next row of stitches.

The m'se.- The vise A comprises a jaw 1, which is adapted to rock on trunnions 2 toward and from the sewing mechanism, but

i 5.1 vigmet l/i nettrsgrataaf, Patented. Dec. 5, 1905.

which has no lateral movement, and a second jaw 1 about pivotal points 4 on the shank of the jaw 1.

The opening and closing of the vise is effected by a vising-lever B, whichcomprises a pair of links 6, pivoted at 7 to the jaw l and pivotally connected at their right ends at proper, 9. The lever 9 turns freely in the block 8 and is held against lengthwise movement by suitable collars 1O 11. The inner end oted to the movable jaw 3 of the vise. When shown inFig. 4, the vise is locked, the lever is slightly above the line of strain in the lever 9 When the jaws are closed on thebroom, and tendency to open is thus prevented. The closingmovementof the lever is stopped by pin 12 coming in contact with vise. The weight-of the lever also tends to hold the jaws locked. When the leverBis thrown up into an. elevated position, the jaws 1 3 are pulled apart, permitting the broom to drop into'position for a second row of stitches or permitting the removal of the broom for the insertion of a new one in the vise.

The broom is supported within the vise by the usual clamps 15 16, which clamps are supspring metal and have forked lower ends which 17 in such manner that the clamping-jaw-s15 16 may be taken out of the vise, if desired, and replaced by others. It is customary to supply each machine with different forms of clam ping-jaws in order to form different sizes and classes of brooms. The springs 18 serve to open the inner jaws whenthe vise is opened- The block 17 slides in guide-slots 20 in the. shank of the fixed jaw, and it'is provided with a handle 21, whereby it may be lifted into po-. sition to receive a new broom after each broom is sewed. The ratchet=bar 22 is removably connected to the block 17 said ratchet-bar having teeth spaced to correspondto the spaces between successive rows of stitches. It is customary to supply each machine with a plural-ity of these ratchet-bars adapted for different spacing. Cooperating with the ratchet.-

jaw 3, which is movable toward and from the opposite sides of the block 8 on the lever thelever 9 is in its horizontal position, as

are removably secured by bolts 19 to the block of lever 9 is screw-threaded and adjustably fitted in a threaded socket 12, which is pivand links6 forming a'toggle-joint. This joint ported upon a verticallysliding block17 by upright pieces '18. These pieces 18 are of bar is a pawl 23, which is withdrawn momentarily from the ratchet-bar as the vise is opened to release and drop the broom-support. This movement of the pawl is effected by a connecting-rod 24, which is pivoted at to an extension of one of the links 6. The rod 24 is threaded, and upon its lower end is a block 26, which engages a short arm 27 on the pawl 23 as rod 24 moves down. Block 26 is held in position to engage the arm 27 by a spring 28. Upon the block 26 is an arm 29, secured on the rod 24 between two check-nuts, which arm is forked and embraces the pawl 23. As the rod 24 is moved down into the position shown in Fig. 5 the pawl 23 is rocked and engages the arm 29 and pushes it to the left, pushing block 26 off of arm 27 and releasing pawl 23, which immediately snaps back into engagement with ratchet-bar 22. The spring 28 is connected with the lower part of pawl 23, and thus operates both the pawl and the rod 24. During each opening of the vise the pawl 23 is withdrawn from the ratchet-bar 22 sufliciently to let said bar drop, and it immediately reengages therewith to prevent it from dropping more than one tooth.

Vise-feeding mechanism. -The vise is given a tendency to move to its forward position by a spring 30, connected to its lower end, Fig. 2. Rigidly connected with the vise is an arm 31, to which is connected a plate 32, which is curved to correspond with a circle drawn about the pivot-line of the vise. The plate 32 travels up and down between a fixed plate or bracket 33 and a clamping-shoe 34, which is operated by a cam-lever 35 and a cam-ring 36 on a cam-wheel C. A second curved plate 37, which is parallel with the plate 32, travels between the bracket 33 and a shoe 38, connected to a cam-lever 39, operated by cam-rib on earn 0. The plate 37 is connected to a stoplever 41, pivoted on the trunnion of the viseframe and freely movable thereon. To the lower end of lever 41 is connected a spring 42, which tends to throw the upper end of said arm forward, thus drawing the plate 37 upward with respect to the shoe 38. The arm 31 carries an adjustable stop 43, which serves to stop the lever 41 with respect to the arm 31. The arm 41 in turn serves as a stop for the upper end of the arm 31. The cam-levers 35 39 are pivoted in the bracket 33, and they are provided with screws 44, which impinge on the shoes 34 38 and which are adjustable to take up wear.

The operation of feeding the vise for successive stitches is as follows: The cam-rings 36 40 move the arms 35 39 alternately to the right, releasing the curved blades 32 37 alternately. When the blade 37 is released, the spring 42 rocks the lever 41 as far as the stop 43 will permit. The lever 41 stands in this position until it is clamped by lever 39. The arm 31 is then released by lever 35 and the spring 30 rocks the vise forward until arm 31 is stopped by lever 41, the vise being rigidly connected with arm 31. In this manner the vise is fed forward step by step, the length of the steps or stitches being regulated by the position of stop 43.

Sewing wwchanisna-The sewing mechanisrn comprises a pair of needles 45, mounted in heads 46, sliding on guide-rods 47, the heads being driven by horizontal arms 48, which are connected by rods 49 with a cross-head 50. In cross-head 50 is a vertical slot, in which operates a bearing block or box 51, carried by a crank-pin 52 on the power-shaft 53. It will be evident that the crank-pin will rock the arms 48 simultaneously in opposite directions. The needle-guides 47 are arranged at a suitable angle for making the stitch required. The needles are threaded alternately by loopers 54, which need not be described in detail as they form no part of the present invention.

The starting once/whim.The machine is started automatically as the vise is thrown back into the sewing position. The relation of the vise to the sewing mechanism at the time of starting must depend upon the width of the broom in the vise in order that the first stitch be properly located. As shown in Fig. 2, the broom 55 is centered in the vise by plates 56 on arms 57, pivoted to one of the vise-jaws. When the'vise is opened, the plates 56 are thrown apart by means of nuts or projections 58, carried by the links 6, said projections engaging right-angled portions of the arms 57. As the vise is closed the arms 57 are drawn together by a spring 59 until the plates 56 engage the edges of the broom. The arm 57, which carries the forward plate 56, is rigidly connected with an arm 60, which has a toothed surface 61. The first stitch is placed near the forward edge of the broom and the correct placing of the stitch is governed by the position of the forward edge of the broom in the vise through the toothed surface 61, which engages a projecting point 62 on an arm 63. The arm 63 is rigidly connected with the rock-shaft, upon which there is a fixed arm 64, adapted to raise a latch 65, which engages a projection 66 upon a bar 67. The bar 67 is constantly drawn toward the rear by a spring 68, and when the machine is not in operation it is held in a forward position by the latch 65. The machine is started and stopped by a clutch-lever 69, operating a clutch 70. The clutch-lever is connected to the bar 67, and when said bar is unlatched the spring 68 immediately engages the clutch with a rotating drive-Wheel 71 and the machine starts. The clutch may be of any desired construction.

The stopping mechanism.----1ivotally connected with the clutch-lever 69 is a casting or head 72. This head 72 is also connected to a lever 73, parallel with lever 69, thereby giving the head a parallel backward and forward movement. In the head 72 is mounted a sliding rod .74, which is normally raised to its highest limit by a spring 75,. Near the lower end of rod 74 is a cam-roll 76. When the machine is started, the lever 64 at the time of releasing the latch 65 also rocks a lever 77 Figs. 2, 7,'and 8, and a roll 78 on said lever presses the rod 74: down into the position ,shown in Fig. 8, and the parts are held in this ceeding revolution of the power-shaft the cam strikes the roll andforces the head 72 forward, disengagingthe clutch members and stopping themachine. The head 72 and rod v67 are latched-in their forward position automatically by the latch 65. The latch 79 is withdrawn by a link 82, which has a hook 83 on its forward end. The forward end of the link is sustained by a short link 84, connecting it with a forwardly-projecting arm 85, which, as shown, is integral with the arm carrying the latch 65. The hook 83 is engaged at the moment the last'stitch in the broom is sewed by a hook 86on the rear plate 56, which bears on the rear edge of the broom. As the last stitch is sewed the forward movement of the vise, acting through the hooks 8 6 83 and the link 82, operates the stopping mechanism aboved described. It will thus be seen that the stopping is effected automatically atthe proper time and that the stopping depends upon the width of the broom or the position of the rear edge of the broom being sewed.

which'rocks the shaft 89. A vertical, arm 90 on said shaft is connected to and supports the forward end of bar 67, Fig. 7. k .The rear end of bar 67 is connected with a brake-lever 91, Figs. 1,3, and 7. Lever 91 is pivoted on the upper end of a lever 92, which carries a brake-shoe adapted tobear on the wheel 93. The lever 91 is anelbow-lever, and its shorter arm is connected; by a link '94 with a lever 95, carrying a brake-shoe on the opposite side of b rake-wheel 93. When the bar 67 is moved forward by cam 81, a brake is applied by means of "the lever-9l and its connections,.stopping the machine quickly.

The operation of the machine will be clearly. understood from the foregoing description. Details ofthe mechanism maybevaried without departing from the spirit and scope of the invention. Hence I desire it to be understood that the invention is not limited to the precise plate.

6 them apart.

construction and arrangement illustrated and described.

Having; described my invention, what I claim, and desire to secure by Letters Patent, 1s

1. In a broom-sewing machine, the combination of a vise arranged to rock about an axis, a curved plate connected to the viseand concentric with its axis, a cam and cam-lever operating to alternately grip and release said plate, and an intermittently-movable stop .for regulating the amountof movement of the r 2. In'a broom-sewing machine, the combi: nation with a vise arranged to rock about an axis, a curved plate connected withvise and concentric with its axis, a stop-lever arranged to rock about the axis of the vise, and pro vided'with a similar curved plate, and means for moving said plates alternately.

3. In-a broom-sewing machine, the combination with a. vise arranged to rock about an axis, a curvedplate connected with the vise and concentric with its axis, a st'op-leverarranged to rock about the axis of thevise, and provided with a similar curved plate, means for moving-said vise and lever alternately, and an adjustable, connection between said curved plates, whereby their relative move- \ment is'limited; i

4:. In a broom-sewing machine, the combination with a vise'arranged to rock about an axis, of a-curved plate connected with the vise and concentric with its axis, a stop-leverarranged to rock about theaxis of the vise, and

provided with a similarcurved plate, cams,

and cam-levers arranged to alternatelygrip and release said plates, and meansfor moving said plates when released, whereby a step-bystep movement is imparted to thevise. V

5. In a broom-sewing machine, the combination with a vise adapted to open and close,

of inner broom-supporting jaws arranged to slide vertically within thevise, spring-plates connectedto said jaws and a sliding block or head to which said plates are connected, said plates serving to support the jaws and to press 6. In a broom-sewing machine, a vise com prising two relatively movable jaws in combinationwith a pair .of links pivoted to one of said jaws, and alever pivoted to the other jaw and connected to said links, said lever being adjustable relatively to said links to vary 7. In a broom sewing machine, a vise com prising two relatively movable jaws in com-- the closing. of the jaws.

8. In a broom-sewing machine, the combination with a vise comprising two relatively movable jaws, of a pair of links connected to one of said jaws and embracing the other jaw, a collar to which said links are connected at their free ends, a lever passing through said collar and arranged to turn therein, means for preventing longitudinal movement of the lever in the collar, and a part pivotally connected to the other jaw and having a threaded connection with said lever for the purpose set forth.

9. In a broom-sewing machine, the combination With the vise, of broom-supporting clamps movable within the vise, a rack connected to said clamps, links connected to one of the vise-jaws, a lever connected to the other vise-jaw and to said links, a pawl cooperating with the rack and connections between said links and said pawl for operating the latter.

10. Inabroom-sewirigmachine, the broomdropping devices comprising the rack, the pawl cooperating with the rack, the arm connected to said pawl, the movable part arranged to operate said arm to release the pawl from. the rack, and means operated by the pawl for releasing said part from said arm, whereby said pawl is permitted to immediately reengage said rack.

11. In abroom-sewing machine, the combination with the vise and the inner broom-supporting clamps, of the rack connected to said clamps, the pawl 23 engaging said'rack and having an arm 27, the rod 2 L having a projecting portion adapted to engage said arm, the arm 29 on said rod arranged to be engaged by the pawl, and the spring 28 connecting said pawl with said rod.

12. In a broom-sewing machine, the combination with the vise, of arms pivoted to the vise and provided with parts extending across the jaws of the vise, means for causing said parts to impinge upon the edges of the broom in the vise, and means connected to one of said arms for eflecting the starting of the machine.

13. In a broom-sewing machine, the combination with the vise, of arms pivoted to the vise and provided with parts extending across the jaws of the vise, means for causing said parts to impinge upon the edges of the brooin in the vise, and means connected to one of said arms for effecting the stopping of the machine.

14. In a broom-sewing machine, the combination with a power-shaft, and a clutch, of a clutch lever for opening and closing the clutch, a rod connected to said lever, a spring connected to said rod and tending to cause engagement of the clutch members, a latch adapted to engage said rod to hold the clutch members outof engagement, and means for disengaging said latch, said means being controlled by the width of the broom in the vise.

15. In a broom-sewing machine, the combination with the vise movable relatively to the sewing mechanism, and the clutch for connecting and disconnecting the sewing mechanism with the power-shaft, of a hook or projection 86 carried by the vise and adjustable relatively thereto, a coacting hook or projection 83, and means operated by the engagement of said hooks or projections for releasing the clutch to stop the machine.

16. In a broom-sewing machine, the combination with a clutch-lever and the brake-lever, of a bar 67 to which said levers are connected, a spring tending to draw said bar in one .direction, a latch arranged to hold said bar against the tension of said spring, a vise, a hook or projection supported on the vise and adapted to operate the stopping mechanism, and a part connected with said latch and cooperating with said hook or projection, for the purpose set forth.

17. In a broom-sewing machine, the combination with a power-shaft, and the clutch, of the clutch-lever 69, and the parallel pivoted arm 73, the head 72 connected to said lever and arm, a cam-roll carried in said head, a retating cam 81, and means for moving said cam-roll into the path of said cam, whereby said cam is caused to operate the clutch.

18. In a broom-sewing machine, the stopping mechanism comprising a clutch-lever 69, a head 72, a cam-roll movably mounted in said head, the spring tending to move said roll into the path of its cam, the latch for holding the roll out of the path of said cam, and means for connecting to the vise for withdrawing said latch.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ANDRElV E. MILLER.

Witnesses:

EDw. MOCAFFRAY, HOWARD D. ADAMS. 

